Mercurial > hg > octave-lyh
annotate scripts/plot/semilogy.m @ 13124:2ea1658ad049
Don't use explicit figure number for tests to avoid interference with any figures opened by user.
(plot/allchild.m, plot/ancestor.m, plot/cla.m, plot/clf.m, plot/close.m,
plot/findall.m, plot/findobj.m, plot/gca.m, plot/gcf.m, plot/hggroup.m,
plot/isfigure.m, plot/line.m, plot/loglog.m, plot/patch.m, plot/semilogx.m,
plot/semilogy.m, plot/surface.m, plot/view.m, plot/whitebg.m, plot/xlim.m,
plot/ylim.m, plot/zlim.m): Don't use explicit figure numer 1232 any more.
author | Kai Habel <kai.habel@gmx.de> |
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date | Sun, 11 Sep 2011 18:48:06 +0200 |
parents | 3b5449493bb8 |
children | e81ddf9cacd5 |
rev | line source |
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11523 | 1 ## Copyright (C) 1993-2011 John W. Eaton |
2313 | 2 ## |
3 ## This file is part of Octave. | |
4 ## | |
5 ## Octave is free software; you can redistribute it and/or modify it | |
6 ## under the terms of the GNU General Public License as published by | |
7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
8 ## your option) any later version. | |
2313 | 9 ## |
10 ## Octave is distributed in the hope that it will be useful, but | |
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 ## General Public License for more details. | |
14 ## | |
15 ## You should have received a copy of the GNU General Public License | |
7016 | 16 ## along with Octave; see the file COPYING. If not, see |
17 ## <http://www.gnu.org/licenses/>. | |
245 | 18 |
3368 | 19 ## -*- texinfo -*- |
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20 ## @deftypefn {Function File} {} semilogy (@var{y}) |
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21 ## @deftypefnx {Function File} {} semilogy (@var{x}, @var{y}) |
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22 ## @deftypefnx {Function File} {} semilogy (@var{x}, @var{y}, @var{property}, @var{value}, @dots{}) |
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23 ## @deftypefnx {Function File} {} semilogy (@var{x}, @var{y}, @var{fmt}) |
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24 ## @deftypefnx {Function File} {} semilogy (@var{h}, @dots{}) |
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25 ## @deftypefnx {Function File} {@var{h} =} semilogy (@dots{}) |
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26 ## Produce a two-dimensional plot using a logarithmic scale for the @var{y} |
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27 ## axis. See the documentation of @code{plot} for a description of the |
6895 | 28 ## arguments that @code{semilogy} will accept. |
29 ## @seealso{plot, semilogx, loglog} | |
3368 | 30 ## @end deftypefn |
4 | 31 |
2314 | 32 ## Author: jwe |
33 | |
6302 | 34 function retval = semilogy (varargin) |
4 | 35 |
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36 [h, varargin, nargs] = __plt_get_axis_arg__ ("semilogy", varargin{:}); |
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37 |
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38 if (nargs < 1) |
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39 print_usage(); |
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40 endif |
7216 | 41 |
7207 | 42 oldh = gca (); |
43 unwind_protect | |
44 axes (h); | |
45 newplot (); | |
3063 | 46 |
7207 | 47 set (h, "yscale", "log"); |
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48 if (any( strcmp (get (gca, "nextplot"), {"new", "replace"}))) |
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49 set (h, "yminortick", "on"); |
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50 endif |
4 | 51 |
7207 | 52 tmp = __plt__ ("semilogy", h, varargin{:}); |
6302 | 53 |
7207 | 54 if (nargout > 0) |
55 retval = tmp; | |
56 endif | |
57 | |
58 unwind_protect_cleanup | |
59 axes (oldh); | |
60 end_unwind_protect | |
4 | 61 |
62 endfunction | |
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63 |
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64 %!demo |
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65 %! x = 1:0.01:10; |
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66 %! y = (x .* (1 + rand (size (x)))) .^ 2; |
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67 %! semilogy (x, y); |
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68 |
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69 %!demo |
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70 %! clf (); |
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71 %! a = logspace (-5, 1, 10); |
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72 %! b =-logspace (-5, 1, 10); |
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73 %! |
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74 %! subplot (1, 2, 1) |
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75 %! semilogy (a, b) |
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76 %! xlabel ('semilogy (a, b)') |
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77 %! |
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78 %! subplot (1, 2, 2) |
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79 %! semilogy (a, abs (b)) |
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80 %! set (gca, 'ydir', 'reverse') |
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81 %! xlabel ('semilogy (a, abs (b))') |
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82 |
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83 %!test |
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84 %! hf = figure ("visible", "off"); |
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85 %! unwind_protect |
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86 %! a = logspace (-5, 1, 10); |
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87 %! b = logspace (-5, 1, 10); |
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88 %! semilogy (a, b) |
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89 %! assert (get (gca, "yscale"), "log"); |
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90 %! assert (get (gca, "xscale"), "linear"); |
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91 %! unwind_protect_cleanup |
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92 %! close (hf); |
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93 %! end_unwind_protect |
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94 |
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95 %!test |
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96 %! hf = figure ("visible", "off"); |
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97 %! unwind_protect |
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98 %! a = logspace (-5, 1, 10); |
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99 %! b =-logspace (-5, 1, 10); |
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100 %! semilogy (a, b) |
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101 %! axis tight |
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102 %! assert (all (get (gca, "ytick") < 0)); |
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103 %! unwind_protect_cleanup |
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104 %! close (hf); |
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105 %! end_unwind_protect |
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106 |
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107 |